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[项目] 触控钢琴

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本帖最后由 gada888 于 2019-3-31 14:53 编辑

触控钢琴
调试设备：Arduino uno
MP3 module
8欧喇触控钢琴图5

叭

touchPiano.rar
TTP229 16 Key Capacitive Keypad 是个IIC模块，1.....VCC (2.4 - 5.5V)
2.....GND
3.....SCL (serial clock in)
4.....SDO (serial data out)
5.....OUT 1 (key 1 state)
6.....OUT 2 (key 2 state)
7.....OUT 3 (key 3 state)
8.....OUT 4 (key 4 state)
9.....OUT 5 (key 5 state)
10...OUT 6 (key 6 state)
11...OUT 7 (key 7 state)
12...OUT 8 (key 8 state)
触控钢琴图7

[mw_shl_code=applescript,true]/*FILE: TTP229_16_Key_Capacitive_Touch_Example
DATE: 25/02/15
VERSION:0.1
REVISIONS:
25/02/15 Createdversion 0.1
Thisis an exampleof howtouse the Hobby Components16 key capacitive touch
keypad(HCMODU0079). Thisexamplesketch will read the currentstate of the
ofthekeypadand if a key ispressed outputitskey number tothe serial port.
The sketch assumesthatthe keypadis configuredto 16 keyactive low mode
byshortingpadsP1-3 andP1-P4 together (see schematic orsport forum for more
information).Connect thekeypad to your Arduinoas follows:
Keypad......Arduino
VCC.........+5V
GND.........GND
SCL.........Digital pin8
SDO.........Digital pin9
You may copy,alter andreusethiscodein any way you like, but please leave
referenceto HobbyComponents.com in your comments if you redistribute this code.
Thissoftwaremay not be useddirectly for the purpose of promotingproducts that
directly competewith Hobby Components Ltd'sownrange of products.
THISSOFTWAREISPROVIDED"ASIS".HOBBY COMPONENTS MAKES NO WARRANTIES,
WHETHER EXPRESS,IMPLIED OR STATUTORY, INCLUDING, BUTNOT LIMITED TO, IMPLIED
WARRANTIES OFMERCHANTABILITYANDFITNESS FOR A PARTICULARPURPOSE,ACCURACY OR
LACKOF NEGLIGENCE. HOBBYCOMPONENTS SHALL NOT, IN ANY CIRCUMSTANCES, BELIABLE
FOR ANY DAMAGES INCLUDING, BUT NOTLIMITED TO, SPECIAL, INCIDENTAL OR
CONSEQUENTIALDAMAGES FORANYREASON WHATSOEVER.*/
/*Definethedigital pins used for theclock and data */
#define SCL_PIN 8
#define SDO_PIN 9
/*Used to storethe key state */
byteKey;
voidsetup()
{
/*Initialise the serial interface */
Serial.begin(9600);
/*Configure theclock anddatapins */
pinMode(SCL_PIN,OUTPUT);
pinMode(SDO_PIN,INPUT);
}
/*Main program */
voidloop()
{
/*Readthecurrent state of thekeypad */
Key = Read_Keypad();
/*If akeyhas been pressed output it tothe serial port */
if(Key)
Serial.println(Key);
/*Waitalittlebeforereadingagain
so notto flood the serial port*/
delay(100);
}
/*Read thestate of the keypad */
byteRead_Keypad(void)
{
byteCount;
byteKey_State=0;
/*Pulse the clock pin 16 times(one for each key of thekeypad)
and readthe stateof the data pinon each pulse*/
for(Count=1;Count <=16;Count++)
{
digitalWrite(SCL_PIN,LOW);
/*Ifthedatapin islow(active low mode) then storethe
current keynumber*/
if(!digitalRead(SDO_PIN))
Key_State = Count;
digitalWrite(SCL_PIN,HIGH);
}
return Key_State;
}[/mw_shl_code]